Understanding H2S in Drilling Operations Hydrogen Sulfide (H₂S) is a highly toxic and flammable gas commonly encountered in oil and gas drilling—especially in sour fields like those in parts of Iraq and Kurdistan. Colorless but has a rotten egg smell at low concentrations. Heavier than air, so it tends to accumulate in low-lying areas. Exposure at even low ppm levels is hazardous; concentrations over 100 ppm can be immediately life-threatening. Normal Response to H2S Detection Standard protocol

THE WATER CYCLE The water cycle, also known as the hydrological cycle, is the continuous movement of water on, above, and below the surface of the Earth. It plays a critical role in shaping geological processes, regulating climate, and sustaining ecosystems. The cycle ensures that water is constantly recycled between the atmosphere, lithosphere, hydrosphere, and biosphere. MAIN PROCESSES IN THE WATER CYCLE 1. EVAPORATION When the sun heats up water from oceans, rivers, and lakes, it changes into